What is the Baha is observe a Nineteen-Day Fast for?

The Nineteen-Day Fast is a nineteen-day period of the year during which members of the Baháʼí Faith adhere to a sunrise-to-sunset fast. Along with obligatory prayer, it is one of the greatest obligations of a Baháʼí, and its chief purpose is spiritual: to reinvigorate the soul and bring the person closer to God.